Hospital invalid bed



April 6 1926.. 1,579,604

W. F. FEDOSENKO HOSPITAL INVALID BED Filed Nov. 27, 1923 2 Sheets-Sheet 1 April 6 1926. 1,579,604

w. F. FEDOSENKO HOSPITAL INVALID BED v Filed Nov. 27, 1925 2 Sheets-Sheet 2 Patented Apr. 6, 1926, r

UNITED J'PATEN FICE- WILLIAM FREDERICK rnnosnnxo, or PERDUE, SASKATCHEWAN, "CANADA;

HOSPITAL INVALID BED. v

A plication ifiled November 2 7, 1923. Serial 1%. 677,252.

To all whom/ it may concern:

r Be it known that I, VVIL IA r Fnnonmoi: FEDOSENKO, a sub 'e-ctofthe King of Great Britain, of the postal districtof Perdue, in

the Province of Saskatchewan, Canada, hav

ing invented new and useful Improvements in'Hospi'tal Invalid Beds, do hereby declare an invalid support primarily designed for that the fol'lowing'is a full, clear, and exact description of the same. 1 i

" M'y invention relates to improvements of usein connectionwithhospital bed, using a s ring mattress in two sections, the upper or ead 'portion of which rests on a movable frame, whereby a patient can be easily elevatedtoa sitting position and lowered to a reclining osition without discomfort, and

which can be easily operated by can attendant or by therpatient himself.-

I attain these objects by themechanism illustrated in the accompanying drawlngs in which: r 7 Figure 1 is a side viewof the mechanism; Figure 2 is a vertical section in the plane of the quadrant; I

"Figure 3 is a top View of the mechanism showing its connection with the frame of the'b ed; V v i p 1 1 Figure 4 is an end View of the mechanism in elevation; a v

Figure 5 is a plan of the wheel member and attachments- 1 Y Similar letters" refer to similar throughout the several views. is the existing frame of a hospital bed to which is attached a movable frame 6 hinged so as to rotate in the sockets 12 which are-attached to the frame, of the bed. The frame 11 carries the movableseetion vof the spring mattress which is intended to simply rest on it (the mattress is not shown in the drawings). 1 l v p I I A cross bar ,13 extends across the frame work of the bed from side to side and is I parts suspended from same as indicated in Fig. 4.

This cross bar carries the weight of th mechanism which is bolted. t it, s sp'endgd theeress b r 13 i f a 14 and a 11am end this bar 27fof theframell.

17 at is ugpsaing'a shaft 1.6 amen ex of the bed. To this end of the shaft and v loosely pivoted thereto is .a lever arm "17,, having at its outer end a handle 18 p1voted to the lever arm 17 by. the rivet 19;. This handle is capable of revolving about the pivot 19. 'fAtta'ched'to the cross arm 20 of th jhandle 1 8 .at either endare connecting wires or rods 21 operating the pawls 22 either side .of the lever arm 17 and which which engage the ratchet wheels 23, one on are firmly attached to the shaft 16. This 1 arrangement provides a means of rotating theshaft 16 in eitherdirection, at the will of the operator, by manipulation of the handle 18;- The ratchet wheels 23 being op posed toone another, the reciprocating motion of the handle 18 provides thatflwheii one ratchet wheel is engaged by the pawl operating in conjunction with it, the pawl operating in conjunction with the other ratchet wheel is released, the stops 17 on the frame '10 retain the leverv 17 in the position indicated in Figure 1, At the inner endof the shaft 16 and betweenthe-two arms of the'frame 14 is a toothed wheel 24 which 'is attached firmly to the sha ft l6 and whichengages with the upper edge of the quadrant 25; The upper edge of the quadrant is toothed to correspond to and fit into the wheel24a The quadrant rests upon the lower edge of the frame 14. upon which it is free-to slide, The arm 26 of the quadrant 25 ispivoted at its upper endon the cross Arotary motion of the shaft 16 by operation of the lever arm 17 causes thewheel 24 to revolve and by means of its connection with the toothed edgeof the quadrant produces a longitudinal motion in the quadrantywhich is tFttIlSll'llttC-Kl to the, frame 11 by means-of its pivoted connection to the bar 27.: A rotary motion ofthe shaft 16 thus ralses or lowers the frame 11 by causing it to, revolve in the sockets 12. The amount oftheelevation of the frame 11 is regulated by the amount of the rotary motion convey ed to the shaft 16 through the lever arm I r ifi l comm; In addition to? the ram imparted as the by the oper fiQf and. thus at all times its frame 11 by means of the quadrant 25 the shaft 16 and the lever 17, and supplementary thereto I provide a coiled spring 28 which assists in the elevation of the frame 11. The spring 28 is coil-ed about a shaft 29 and is supported by frame 30 which is suspended from the cross bar 3 and bolted to it. One end of the coiled spring 28 is attached to the frame 30 and the other end to the shaft 29. A lever arm 31 is loosely mounted on the shaft 29 and attached thereto at the lower end is a pawl which engages the ratchet wheel 32 the lever arm being held in almost vertical position by the stop 31. A wheel 33 rotates loosely on the shaft 29 and is connected therewith by means of a pawl attached to the wheel 33 which engages the ratchet wheel 3 1 which is firmly attached to the shaft 29.

A rotary motion of the shaft 29 produces a tension in the coiledspring 28 and this is imparted to the wheel 33 by means of the ratchet wheel 34 and pawl attached to the wheel. The amount of tension can be regulated by the operator to suit the weight of the various patients who may use the bed.

Firmly attached to the outer edge of the wheel 33 is a bar 35 Whose outer end is slotted and pivoted to the bar 36 at its lower end. The upper end of the bar 36 is pivoted to the cross bar 27 of the frame 11. The wheel 33 is provided with a stop 33 which engages with the frame 30, this stop being so set on the circumference of the wheel that after revolving a certain distance under tension of the coiled spring 28, the rotary motion of the wheel 33 comes to an end and the tension in the spring ceases to exert any force through the bars 35 and 36. This provision is made to assist in raising the frame 11 upon which a patient is reclining on a mattress, from a horizontal position to an inclined position, more force being required in this portion of the operation than. when the frame 11. has reached. a position approaching the perpendicular. lVhen the frame has been elevated by means of the force applied by the patient or an attendant, by rotating the lever arm 17, together with the force exerted by the coiled spring to a certain predetermined inclination, the stop 'on the circumference of the wheel 33 engages on the frame 30. l-iny further inclination or elevation of the frame ll must necessarily be produced by the operation of the quadrant 25 by exerting a force on the lever bar 17, this latter increase in elevation being entirely under the control of the at tendant or patient, and danger of any sudden or unintentional elevation of the frame, liable to throw the patient too far forward due to the action of the coiled spring, is thereby eliminated. The slot in the outer end of the bar 35 permits of the additional elevation of the frame 11 by means of the lever arm 17 as thus described after the coiled spring has ceased to exert an upward thrust by reason of the stop 33 aforesaid attached to the wheel 33 having come into a position to engage the frame 30.

In lowering a patient from an upright to a horizontal position the operation above described is reversed. The patient or attendant works the lever arm 17 after reversing the direction of motion thereby applied to the shaft 16 by means of the handle 18 releasing the pawl 22 previously engaged with the ratchet wheel 23 and engaging the pawl in the opposing ratchet wheel 23. The shaft 16 and the toothed wheel 2 1 is thus rotated and the frame 11 is lowered by means of the quadrant 25 and arm 26 until the frame 11 reclines sufficiently to bear up onthe coiled spring 28. On a still further rotation of the shaft 16 by means of the le ver bar 17 a portion of the weight ofthe frame 11 is shifted to and is carried by the coiled spring 28 in such a manner as to complete the operation of lowering the patient to a horizontal position without jar or shock.

lVhat I claim as my invention is:

1. In a device of the character described, a bed frame, a second frame operatively mounted therein and means for raising and lowering said frame comprising a suitably formed quadrant, a shaft provided with means designed to engage with the quadrant, said quadrant being pivotally connected to the second frame whereby on the shaft being operated the quadrant is moved forwards or backwards to raise or lower said frame, supplementary raising and lowering means for the second frame comprising a spring-actuated countershaft, a wheel loosely mounted on the shaft provided with a pawl, and a ratchet wheel fixedly mounted on the shaft and adapted to be engaged by said pawl, a lever arm pivotally connected through a link with the second frame at one end and fixedly connected to said Wheel at the other end.

2. An adjustable bed ofthe character described comprising a main frame and an operatively mounted second frame, a quadrant pivotally connected to the second frame, a shaft provided with means adapted to engago with. said quadrant and pawl and ratchet wheel means, in combination with. a rotatable handle flexibly connected to said pawl and ratchet wheels for operating said shaft, auxiliary raising and lowering means for the second frame comprising a second shaft operatively connected to the second frame a shaft arm and a spring for operating said shaft and stop means for said spring.

i 3. In a bed of the character described a main frame, an inner frame pivotally mounted on the main frame, a quadrant operatively connected to the inner frame, a shaft provided with means adapted to engage with said quadrant, means for operating the shaft from a distance to move the quadrant back a spring actuated counter shaft, a lever, arm

hand.

for the shaft and means for operating said arm and step means foresaid Operating" means 1 I a In w tnesswhereof I have hereunto set my WILLIAM FREDERICK FEDOS ENKO; 

